Oregon Sales Tax Calculator (2026) — Add or Reverse Tax
Oregon's combined sales tax rate is 0.00% (0.00% state). Use the calculator below to add Oregon sales tax to a price, or reverse a tax-included total to find the pre-tax price and exact tax amount.
How to use this calculator:
- Adding tax — enter a pre-tax price, pick "Add tax to price," and the calculator applies the Oregon rate to show the tax amount and final total.
- Reversing (extracting) tax — enter a total that already includes tax, pick "Extract tax from total," and the calculator divides by 1 + the rate to isolate the pre-tax price and the exact tax paid.
- Pick the rate that matches your situation: the average combined rate is a good statewide estimate, but the state-only or maximum-local rate is more precise if you know the exact city or county.
Understanding Oregon Sales Tax
Oregon's state sales tax rate is 0.00%, with no additional local sales tax in most of the state.
Oregon has no sales tax of any kind, state or local — one of only five US states, but unlike most of the others it does levy a state income tax.
Oregon also levies a state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Oregon state sales tax.
Largest city
Portland
State income tax
Yes
Why Reverse Sales Tax Calculation Matters
Receipts and marketplace payouts usually show only the tax-included total, so separating revenue from tax collected — for bookkeeping, expense reports, or checking what an item costs before Oregon's tax is applied — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why the calculator above handles it exactly.
How Oregon Fits Into the US Sales Tax System
The United States has no federal sales tax — unlike VAT/GST countries where a national rate applies everywhere, US sales tax is set entirely at the state level, and each of the 50 states (plus DC) independently decides whether to levy one, what the rate is, and what's exempt. Oregon is one of the 5 states with no general state-level sales tax (the others are Delaware, Montana, New Hampshire, and Oregon). States can also authorize cities, counties, and special districts to add their own local rate on top of the state rate — which is why the "combined rate" shown on this page is a blend, not a single fixed number, and why it can differ from the state rate alone by several percentage points depending on the exact delivery address.
History & Rate Breakdown
Oregon voters have rejected a general sales tax multiple times over the decades, leaving the state to fund government primarily through income tax. A distinctive companion feature, the 'kicker' law, was first enacted by ballot measure in 1979-1980 and later written into the state constitution in 2000.
There is no sales tax rate to break down anywhere in Oregon — no state rate, no local rate, no exceptions for specific goods or services at the point of sale.
Where the Money Goes
Because Oregon has no sales tax, the state relies almost entirely on income tax revenue — and its unique 'kicker' law requires the state to refund the surplus back to taxpayers (or, if voters choose, to K-12 schools) whenever actual biennial revenue collections exceed the official forecast by more than 2%.
Business Use Case: Registering & Collecting Oregon Sales Tax
A retailer selling into Oregon charges no sales tax on any transaction, state or local — a genuine competitive advantage for Oregon-based retailers selling to price-sensitive shoppers from neighboring Washington or California, who often cross the border specifically to make large purchases tax-free.
Key terms: combined rate — state rate plus applicable local add-ons; reverse sales tax — working backward from a tax-included total via total ÷ (1 + rate); economic nexus — a sales threshold that obligates an out-of-state seller to collect tax without a physical presence; marketplace facilitator — a platform that remits tax on behalf of third-party sellers.
Real-World Example: Adding Tax to a Price
A $500.00 purchase in Oregon at the average combined rate of 0.00%:
- Tax amount: $500.00 × 0.00% = $0.00
- Total price: $500.00 + $0.00 = $500.00
Real-World Example: Extracting Tax From a Receipt Total
A receipt shows a $749.99 tax-included total in Oregon at the average combined rate of 0.00%:
- Pre-tax price: $749.99 ÷ (1 + 0.00%) = $749.99
- Tax amount: $749.99 − $749.99 = $0.00
Oregon Sales Tax Compliance for Sellers
Oregon has no general state sales tax, so there is no economic nexus threshold to track for state-level sales tax purposes. Sellers should still confirm whether any local jurisdiction-level tax applies.
Frequently Asked Questions — Oregon Sales Tax
What is the sales tax rate in Oregon?▾
Does Oregon tax groceries?▾
Does Oregon have a state income tax?▾
When do online sellers need to collect Oregon sales tax?▾
How do I calculate Oregon sales tax on a purchase?▾
How do I reverse Oregon sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Oregon?▾
References & Sources
Methodology: the combined rate shown is the state rate plus the population-weighted average of local (city/county/district) rates reported by the Tax Foundation for 2026; it is an average, not the exact rate for any single address — use the county table above where available, or confirm the exact local add-on with the Oregon Department of Revenue, for a specific delivery address. Economic nexus thresholds are sourced from the Sales Tax Institute's Economic Nexus State Guide.
Rates last verified January 2026. Oregon sales tax rates and thresholds change over time — always confirm current figures with the Oregon Department of Revenue before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: Oregon, United States. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- Tax Foundation, 2026 State and Local Sales Tax Rates
- Relevant state department of revenue guidance